The line style toolbar lets you pick from a huge assortment of line style and ends. Click on the button to drop down a list of the available styles for lines, polylines, curves, and polycurves. For those line styles that have an orientation (e.g. leaves, water boundaries, timberline, and pack-ice), you can flip the orientation of the design by using Transform | Reverse Line Direction. To create a filled area with no edge, use the blank line style (at the top of the list).

When you select an object, the line style controls change to reflect that object's line style. New objects are added with the displayed line styles. And if you change the line styles while objects are selected, those objects will be changed to the new line styles.

Not every line style is well suited to every type of line. For some of the more intricate line style designs, you may need to experiment to see if single line segments, polylines, or curves can best capture what you are attempting to do. Likewise, many of the line tips display best when used with simple line styles.